1 files changed, 69 insertions, 0 deletions
diff --git a/phpBB/phpbb/filesystem.php b/phpBB/phpbb/filesystem.php
index 27cab48fb0..a85a254865 100644
--- a/phpBB/phpbb/filesystem.php
+++ b/phpBB/phpbb/filesystem.php
@@ -6,6 +6,9 @@
 * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
 *
 */
+
+use Symfony\Component\HttpFoundation\Request;
+
 /**
 * @ignore
 */
@@ -20,6 +23,72 @@ if (!defined('IN_PHPBB'))
 */
 class phpbb_filesystem
 {
+	/** @var string */
+	protected $phpbb_root_path;
+
+	/**
+	* Constructor
+	*
+	* @param string $phpbb_root_path
+	*/
+	public function __construct($phpbb_root_path)
+	{
+		$this->phpbb_root_path = $phpbb_root_path;
+	}
+
+	/**
+	* Get the phpBB root path
+	*
+	* @return string
+	*/
+	public function get_phpbb_root_path()
+	{
+		return $this->phpbb_root_path;
+	}
+
+	/**
+	* Get a relative root path from the current URL
+	*
+	* @param Request $symfony_request Symfony Request object
+	* @return string
+	*/
+	function get_web_root_path(Request $symfony_request = null)
+	{
+		if ($symfony_request === null)
+		{
+			return '';
+		}
+
+		static $path;
+		if (null !== $path)
+		{
+			return $path;
+		}
+
+		$path_info = $symfony_request->getPathInfo();
+		if ($path_info === '/')
+		{
+			$path = $this->phpbb_root_path;
+			return $path;
+		}
+
+		$path_info = $this->clean_path($path_info);
+
+		// Do not count / at start of path
+		$corrections = substr_count(substr($path_info, 1), '/');
+
+		// When URL Rewriting is enabled, app.php is optional. We have to
+		// correct for it not being there
+		if (strpos($symfony_request->getRequestUri(), $symfony_request->getScriptName()) === false)
+		{
+			$corrections -= 1;
+		}
+
+		$path = $this->phpbb_root_path . str_repeat('../', $corrections);
+
+		return $path;
+	}
+
 	/**
 	* Eliminates useless . and .. components from specified path.
 	*